Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch Stainless Steel 347H Round Bars and Rods, specifically designed for high-temperature and pressure-critical industrial applications. SS 347H is a niobium-stabilized, high-carbon austenitic stainless steel that excels in creep strength at elevated temperatures. With a focus on precise dimensions, a smooth surface finish, and rigorous quality control, these round bars and rods ensure exceptional mechanical reliability and long-lasting thermal stability. Hemi Metals caters to industries like power generation, petrochemicals, refineries, and heavy engineering, where strength, durability, and corrosion resistance are paramount.
Stainless Steel 347H is composed of about 17–19% chromium and 9–13% nickel, featuring a higher carbon content and niobium stabilization to avoid carbide precipitation during high-temperature use. This unique blend offers remarkable resistance to intergranular corrosion and impressive creep strength. Typically, SS 347H round bars boast a tensile strength ranging from 515–620 MPa and a yield strength of about 205–240 MPa, along with good ductility and impact toughness. These bars are non-magnetic when annealed and maintain consistent mechanical performance even after prolonged exposure to high temperatures.
Stainless Steel Round Bar Specification : ASTM A276 / A479, ASME SA276 / A479
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | C | Mn | Si | P | S | Cr | Ni | Ti |
| 347H | 0.04 – 0.10 | 2.00 max. | 0.75 max. | 0.045 max. | 0.03 max. | 17.0 – 19.0 | 9.0-13.0 | 8 x C min. |
| (1.00 max.) |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347H | 1.4961 | S34709 |
When selecting Stainless Steel 347H Round Bars and Rods, consider factors such as high-temperature resistance, corrosion resistance, mechanical strength, fabrication requirements, and cost-effectiveness for your specific industrial application.
Yes, Stainless Steel 347H Round Bars and Rods can be welded. Their niobium content ensures excellent weldability, making them ideal for high-temperature applications when using appropriate filler materials.
Stainless Steel 347H Round Bars and Rods do not have a specific pressure rating. However, they are suitable for high-pressure applications due to their strength, corrosion resistance, and high-temperature stability.
Stainless Steel 347H Round Bars and Rods find extensive use in high-temperature and high-pressure settings where both strength and corrosion resistance are crucial. They are commonly utilized in boiler components, superheater assemblies, heat exchangers, furnace parts, exhaust systems, and pressure vessel components. In the petrochemical and power generation sectors, SS 347H rods and bars serve as structural supports, valve components, pipeline fittings, and expansion joints. They are also employed in refinery systems, gas processing units, and thermal processing equipment, thanks to their excellent weldability and overall performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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